mfsmetalogger(8)

NAME

mfsmetalogger - start, restart or stop Lizard File System metalogger process

SYNOPSIS

mfsmetalogger [-f] [-c CFGFILE] [-p PIDFILE] [-u] [-d] [-t LOCKTIMEOUT] [ACTION]
mfsmetalogger -s [-c CFGFILE]
mfsmetalogger -v
mfsmetalogger -h

DESCRIPTION

mfsmetalogger is the metadata replication server of the Lizard File System. Depending on the parameters given to it, it can start, restart or stop the LizardFS metalogger process. Without any options it starts the LizardFS metalogger, killing any previously run process if a lock file exists.

SIGHUP (or reload ACTION) forces mfsmetalogger to reload all configuration files.

-v print version information and exit
-h print usage information and exit
-c CFGFILE specify alternative path of the configuration file (default is mfsmetalogger.cfg in the system configuration directory).
-u log undefined configuration values (for which defaults are assumed)
-d run in the foreground, don’t daemonize
-t LOCKTIMEOUT how long to wait for lockfile (default is 60 seconds)
-p PIDFILE write pid to given file
ACTION
is one of start, stop, restart, reload, test, isalive or kill. Default action is restart.

FILES

mfsmetalogger.cfg
configuration file for LizardFS metalogger process; refer to the mfsmetalogger.cfg(5) manual page for defails
mfsmetalogger.lock
PID file of running LizardFS metalogger process
.mfsmetalogger.lock
lock file of running LizardFS metalogger process (created in data directory)
changelog_ml.*.mfs
LizardFS filesystem metadata change logs (backup of master change log files)
metadata.ml.mfs.back
Latest copy of complete metadata.mfs.back file from LizardFS master.
sessions.ml.mfs
Latest copy of sessions.mfs file from LizardFS master.

REPORTING BUGS

Report bugs to <contact@lizardfs.org>.

SEE ALSO

mfsmaster(8), mfsmetalogger.cfg(5), lizardfs(7)